| 小麦产量构成因素的双列杂交分析 |
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| 引用本文： | 姚金保,任丽娟,张平平,杨学明,马鸿翔,姚国才,张鹏,周淼平.小麦产量构成因素的双列杂交分析[J].核农学报,2011,25(4):633-638. |
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| 作者姓名： | 姚金保 任丽娟 张平平 杨学明 马鸿翔 姚国才 张鹏 周淼平 |
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| 作者单位： | 江苏省农业科学院农业生物技术研究所,江苏南京,210014 |
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| 基金项目： | 江苏省农业科技自主创新资金(CX09635); 现代农业产业技术体系建设专项(nycytx-03); 江苏省科技支撑计划项目(BE2008366-2,BE2009426) |
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| 摘 要： | 利用千粒重和每穗粒数有一定差异的7个冬小麦品种为亲本,按Griffing双列杂交法Ⅱ配制21个杂交组合,研究了小麦2个产量构成因素——千粒重和每穗粒数的遗传。结果表明,扬麦11千粒重和宁麦9号每穗粒数的一般配合力最好,且宁麦9号具有控制每穗粒数较多的显性基因。千粒重的遗传符合加性-显性-上位性模型。每穗粒数的遗传符合加...
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| 关 键 词： | 小麦 产量构成因素 双列杂交 |
| 收稿时间： | 2011-03-08 |
DIALLEL ANALYSIS FOR YIELD COMPONENTS OF WHEAT |
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| YAO Jin-bao REN Li-juan ZHANG Ping-ping YANG Xue-ming MA Hong-xiang YAO Guo-cai ZHANG Peng ZHOU Miao-ping.DIALLEL ANALYSIS FOR YIELD COMPONENTS OF WHEAT[J].Acta Agriculturae Nucleatae Sinica,2011,25(4):633-638. |
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| Authors: | YAO Jin-bao REN Li-juan ZHANG Ping-ping YANG Xue-ming MA Hong-xiang YAO Guo-cai ZHANG Peng ZHOU Miao-ping |
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| Institution: | YAO Jin-bao REN Li-juan ZHANG Ping-ping YANG Xue-ming MA Hong-xiang YAO Guo-cai ZHANG Peng ZHOU Miao-ping(Institute of Agricultural Biotechnology,Jiangsu Academy of Agricultural Sciences,Nanjing,Jiangsu 210014) |
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| Abstract: | The genetic mechanism of thousand-grain weight (TGW) and number of kernels per spike (NKS) were studied by a 7×7 complete diallel crosses (Griffing's method II) using seven wheat parents with diverse TGW and NKS during 2009-2010 growing season. The results showed that Yangmai 11 and Ningmai 9 had the best general combining ability for TGW and NKS, respectively, and Ningmai 9 had more dominant genes controlling NKS. The inheritance of TGW fit for the additive-dominance-epistasis model, and the inheritance of NKS was in agreement with the additive-dominance model. The NKS was controlled by both additive and dominant genetic effects, and the additive effect was much more important than the dominant effect. The degree of dominance was partial dominance. The alleles increasing NKS were dominant, and the frequency distribution of alleles increasing or reducing NKS was asymmetrical among 7 parents. Narrow sense heritability of NKS was higher, indicating that selection of NKS in early generation was effective. The genetic improvement on TGW and NKS was also discussed in the paper. |
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| Keywords: | wheat yield components Diallel cross |
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